add /etc/nsswitch.conf to control plane images #69238
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/sig release |
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no trailing newline?
also I feel like this maybe belongs in a subdir, but I don't know where.
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first is done, don't know what subdir either...
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/kind bug |
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hmmm https://k8s-gubernator.appspot.com/build/kubernetes-jenkins/pr-logs/pull/69238/pull-kubernetes-verify/108080/#verify-staging-godeps something with godeps flaking... /retest |
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[APPROVALNOTIFIER] This PR is APPROVED This pull-request has been approved by: BenTheElder, ixdy The full list of commands accepted by this bot can be found here. The pull request process is described here DetailsNeeds approval from an approver in each of these files:
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This file was added in 2018 (PR kubernetes#69238) to ensure Go's netgo DNS resolver respects /etc/hosts in busybox-based control plane images. In 2021 (PR kubernetes#99015), the build switched to on-disk Dockerfiles and distroless base images. The nsswitch.conf copying was dropped and the distroless base (Debian-based) already includes /etc/nsswitch.conf. Signed-off-by: Davanum Srinivas <[email protected]>
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What this PR does / why we need it: adds a minimal
/etc/nsswitch.confto control plane images that do not have one, ensuring that they respect /etc/hosts when lookup up hostnamesWhich issue(s) this PR fixes (optional, in
fixes #<issue number>(, fixes #<issue_number>, ...)format, will close the issue(s) when PR gets merged):Fixes #69195
Special notes for your reviewer: Without this, in some cases we may do unnecessary DNS lookups in EG the API server. This broke my control plane boot due to trying to lookup
localhostRelease note: